<template>
  <div class="leave">
   <div class="chuchai">
      请假申请
      <i class="el-icon-star-on"></i>
      <i class="el-icon-s-tools"></i>
      <i class="el-icon-more"></i>
    </div>
    <div class="opes">
      <el-button size="small" @click="drawer = true">发起新的</el-button>
      <!-- headers 设置上传请求头 -->
      <!-- data 上传请求需要携带的参数 -->
      <!-- action 上传地址 -->
      <!-- name 上传字段, 字段值必须是 excel -->

      <!-- on-success 文件上传成功时的回调 -->
      <el-upload
        :show-file-list="false"
        :on-success="onSuccess"
        class="upload"
        :headers="headers"
        :data="{userid:userinfo._id}"
        name="excel"
        action="/api/leave/import">
        <el-button size="small" >导入</el-button>
      </el-upload>
      
      <el-button size="small" > 
        <el-link :href="'/api/leave/download?userid='+userinfo._id">导出</el-link> 
      </el-button>
    </div>

    <!-- 表格 -->
    <el-tabs v-model="activeName" >
      <el-tab-pane label="待办事项" name="1">
        <!-- 渲染leaveTable表格组件 -->
        <leaveTable 
        :columns="columns"
        :total="total"
        :leavelist="leavelist" 
        :handleCurrentChange="handleCurrentChange" 
        :deleteRow="deleteRow">
        </leaveTable>
      </el-tab-pane>
      <el-tab-pane label="已办事项" name="2">已办事项</el-tab-pane>
      <el-tab-pane label="抄送事项" name="3">抄送事项</el-tab-pane>
      <el-tab-pane label="我发起的" name="4">我发起的</el-tab-pane>
      <el-tab-pane label="全部数据" name="5">全部数据</el-tab-pane>
      <el-tab-pane label="统计报表" name="6">
        <!-- 绘制图表的位置 -->
        <MyEchart></MyEchart>
      </el-tab-pane>
    </el-tabs>
    
    

    <!-- 抽屉 -->
    <el-drawer
      :visible.sync="drawer">
      <el-form 
        :model="ruleForm" 
        status-icon 
        :rules="rules" 
        ref="ruleForm" 
        label-width="100px" 
        class="leave-box">
        <h3 class="title">请假申请</h3>
        <el-form-item label="申请人" prop="name">
          <el-input type="text" v-model="ruleForm.name" autocomplete="off" placeholder="申请人"></el-input>
        </el-form-item>

        <el-form-item label="请假事由" prop="reason">
          <el-input type="textarea" v-model="ruleForm.reason" autocomplete="off" placeholder="请假事由"></el-input>
        </el-form-item>

        <el-form-item label="开始日期" prop="starttime">
          <el-date-picker
            v-model="ruleForm.starttime"
            type="date"
            placeholder="选择开始日期">
          </el-date-picker>
        </el-form-item>

        <el-form-item label="结束日期" prop="endtime">
          <el-date-picker
            v-model="ruleForm.endtime"
            type="date"
            placeholder="选择结束日期">
          </el-date-picker>
        </el-form-item>

        <el-form-item label="请假总天数" prop="days">
          <el-input type="text" v-model="ruleForm.days" autocomplete="off" placeholder="请假总天数"></el-input>
        </el-form-item>

        <el-form-item class="form-footer">
          <el-button type="primary" @click="submitForm()">提交</el-button>
        </el-form-item>
      </el-form>
    </el-drawer>
  </div>
</template>

<script>
import { mapState } from 'vuex'
import leaveTable from '../../components/leaveTable.vue'
import MyEchart from '../../components/MyEchart.vue'
import {leave_add,leave_list,leave_delete} from '../../utils/api'
export default {
  data(){
    var validateName= (rule, value, callback) => {
      if ( value.length < 2 ) {
        callback(new Error('请输入正确的申请人姓名'));
      } else {
        callback();
      }
    };
    var validateReason = (rule, value, callback) => {
      if ( !value ) {
        callback(new Error('请输入请假事由'));
      } else {
        callback();
      }
    };
    var validateStarttime = (rule, value, callback) => {
      if ( !value ) {
        callback(new Error('请选择开始日期'));
      } else {
        callback();
      }
    };
    var validateEndtime = (rule, value, callback) => {
      if ( !value || (new Date(this.ruleForm.starttime) - new Date(value)) > 0 ) {
        this.ruleForm.days = 0;
        callback(new Error('请选择结束日期'));
      } else {
        //计算总天数
        this.ruleForm.days = ( new Date(value) - new Date(this.ruleForm.starttime) ) / (24*60*60*1000) + 1;
        callback();
      }
    };
    var validateDays = (rule, value, callback) => {
      if ( Number(value) < 1 ) {
        callback(new Error('请输入请假总天数'));
      } else {
        callback();
      }
    };

    return {
      headers:{Authorization:'Bearer ' + localStorage.getItem('token')},
      drawer:false,//控制抽屉组件是否显示
      total:0,//请假申请总数
      page:1,//页码
      leavelist:[],
      ruleForm:{
        name: this.$store.state.userinfo.name ,
        reason:'',
        starttime:'',
        endtime:'',
        days:0,
      },
      rules: {
        name: [
          //validator 验证器 , trigger 触发器
          { validator: validateName, trigger: 'blur' }
        ],
        reason: [
          { validator: validateReason, trigger: 'blur' }
        ],
        starttime: [
          { validator: validateStarttime, trigger: 'blur' }
        ],
        endtime: [
          { validator: validateEndtime, trigger: 'blur' }
        ],
        days: [
          { validator: validateDays, trigger: 'blur' }
        ]
      },
      activeName: "1",
       columns: [
        {
          prop: "_id",
          label: "编号",
        },
        {
          prop: "status",
          label: "当前流程状态",
          formatter: this.formater_status,
        },
        {
          prop: "name",
          label: "申请人",
        },
        {
          prop: "reason",
          label: "请假事由",
        },
        {
          prop: "starttime",
          label: "开始日期",
          formatter: this.formater_time,
        },
        {
          prop: "endtime",
          label: "结束日期",
          formatter: this.formater_time,
        },
        {
          prop: "days",
          label: "请假总天数",
        },
      ],
    }
  },
  components: {
    leaveTable,
    MyEchart,
  },
  mounted(){
    leave_list({ userid: this.userinfo._id ,page:1 }).then((res)=>{
      this.leavelist = res.data.list;
      this.total = res.data.total;
    })
  },
  computed:{
    ...mapState(['userinfo'])
  },
  methods:{
    submitForm(){
      this.$refs.ruleForm.validate((valid)=>{
        if( valid ){
          leave_add( {userid: this.userinfo._id ,...this.ruleForm }).then((res)=>{
            if( res.data.code == 200 ){
              this.$message.success(res.data.msg);
              this.drawer = false;//隐藏抽屉
            }else{
              this.$message.error(res.data.msg);
            }
          })

        }else{
          console.log('验证失败');

        }
      })
    },
    formater_status(row, column, cellValue, index){
      return cellValue == 0 ? '待审批' : '已通过';
    },

    formater_num(num){
      return num < 10 ? '0'+num : num;
    },

    formater_time(row, column, index){
      var d = new Date(  );
      return `${d.getFullYear()}-${ this.formater_num( d.getMonth()+1 ) }-${ this.formater_num( d.getDate() ) }  ${ this.formater_num( d.getHours() ) }:${ this.formater_num( d.getMinutes() ) }:${ this.formater_num( d.getSeconds() ) }` ;
    },
    handleCurrentChange(val){
      this.page = val; //保存页码
      //请求对应页码的数据
      leave_list({ userid: this.userinfo._id ,page:val }).then((res)=>{
        this.leavelist = res.data.list;
      })
    },
    deleteRow(id){
      //删除对应id的 请假申请
      leave_delete({userid: this.userinfo._id , id ,page: this.page }).then((res)=>{
        this.leavelist = res.data.list;
        this.total = res.data.total;
      })
    },
    onSuccess(res){
      if( res.code == 200 ){
        this.$message.success(res.msg);
      }else{
        this.$message.error(res.msg);
      }
    }
  }
}
</script>

<style lang="scss">
.leave {
   .chuchai{
     color: #000;
      font-size: 25px;
      font-weight: 700;
      i:nth-child(1){
        color:goldenrod;
        font-size: 30px;
        margin-left: 10px;
      }
       i:nth-child(2){
        color:gray;
        font-size: 25px;
        margin-left: 10px;
      }
       i:nth-child(3){
        color:gray;
        font-size: 25px;
        margin-left: 10px;
      }
  }
}
.opes{
  margin: 20px 0;
  display: flex;
  .upload{
    margin: 0 20px;
  }
}
.leave-box{
  padding: 20px;
  .title{
    margin-bottom: 20px;
  }
}
.pagination{
  margin-top: 20px;
}
#main{
  width: 500px;
  height: 300px;
}
</style>